Agreed Jim, to me this is futile. I have a screen protector on my phone so I don't scratch the screen when i drop it, or scratch it with anything else that it shares a pocket with. Without wanting to tempt fate, in 20 years of driving i've never managed to scratch my radio or sat nav screen. A screen protector won't prevent fingerprints from being seen, you'll still need to wipe it clean, so I fail to see the point.